(19)
(11) EP 3 935 762 A1

(12)

(43) Date of publication:
12.01.2022 Bulletin 2022/02

(21) Application number: 20797959.2

(22) Date of filing: 09.10.2020
(51) International Patent Classification (IPC): 
H04B 10/66(2013.01)
(52) Cooperative Patent Classification (CPC):
H04B 10/66
(86) International application number:
PCT/US2020/054945
(87) International publication number:
WO 2021/086578 (06.05.2021 Gazette 2021/18)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 31.10.2019 US 201962928388 P

(71) Applicant: Ciena Corporation
Hanover, MD 21076 (US)

(72) Inventors:
  • LI, Xueyang
    Montreal, QC H3A 0E9 (CA)
  • O'SULLIVAN, Maurice
    Ottawa, ON K2K 0L1 (CA)
  • XING, Zhenping
    Montreal, QC H3A 0E9 (CA)
  • PLANT, David, V.
    Montreal, QC H3A 0E9 (CA)
  • PASANDI, Mohammad, Mousa
    Ottawa, ON K2K 0L1 (CA)

(74) Representative: Dehns 
St. Bride's House 10 Salisbury Square
London EC4Y 8JD
London EC4Y 8JD (GB)

   


(54) ASYMMETRIC DIRECT DETECTION OF OPTICAL SIGNALS